Carline



March 11, 1924. 1,486,318

C. D. BONSALL CARLINE Filed Feb. 23 1922 I- atented Mar. ll, i924.

CHARLES DAVID BONSALL, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T P. H. IViUB/PHY COMEANY, OE NEW KENSINGTQN, PENNSYLVANIA, A CORPORATION" OF PENNSYLVANIA.

CARLINE.

Application filed February 23, 1922. Serial No. 538,652.

.To all whom it mag/concern.

Be it known that 1, CHARLES DAVID BON- SAL-L, a citizen of the United States, and a resident of the city of Pittsburghfin theuseful Improvement in Carlines, of which the following is a specification.

My invention relates to carlines and has w for its principal objects to devise a carline that is adapted to be made from a single sheet or metal; to devise a carline that will not only be capable of carrying a considerable vertical load but will be capable of offering considerable resistance to the stresses that tend to distort the car frame; and to devise a carline of great strength and light weight that may be produced with great economy.

single-piece carline of pressed steel, wherein the end portions are widened out and provided withstiiiening corrugations that extend longitudinally from the ends thereof; it also consists in a carline that is provided with a medial hollow rib or inverted channel extending the full length thereof and tapering from the middle to the respective ends in conjunction with longitudinally extending ribs in the four corner portions of said carline; it also consists in the arrangements and combinations of parts hereinafter described and claimed.

In the accompanying drawing, wherein like numerals refer to like numbers whereever they occur,

Fig. 1 is a plan view of a carline embodying my invention shown in connection with the side plates of a car;

Fig. 2 is a side elevation of the carline, the side plates being shown in section and the purlines being indicated by dot and dash lines;

Figs. 3 and 4 are cross-sections through the carline on the planes indicated by the dotted lines 3-S and t-4, respectively, in Fig. 1; and

Fig. 5 is a plan view illustrating a modiiied form of carline.

The carlines A. and B shown in Figs. 1 and 5 of the accompanying drawings are each pressed up from a rectangular blank of sheet metal. The middle portion of the The invention consists principally in a.

blank from which each carline is formed is pressed up into the form of a hollow rib or inverted channel 1 that extends from end to end of the carline, leaving the side marginal portions of the blank projecting laterall" from the bottom of said hollow rib in the form of flanges 2. Each carline is pitched from the end to the middle, and the hollow rib thereof is pitched at a higher inclination than the lateral flanges; that is, the vertial members of the hollow iii are deeper at the ridge than at the ends of the carline, so that the hollow rib tapers from ridge to ends. The width or" the hollow rib of the carline A is widest at the ridge and gradually diminishes towards the ends, so that said hollow rib tapers from ridge to ends in width as well as in depth. The hollow rib of the carline B is of uniform. width from ridge to points intermediate the ridge and ends and gradually diminishes from said points towards the ends.

In consequence of the tapering of the hollow ribs of the carlines A. and B the lateral or base flanges of the carline A increase in width from ridge to ends and the base flanges of the carline B increase in width from points midway of the ridge and ends to said ends, thus providing wide bearings on the side plates C of the car. In order to increase the strength of the corner portions of the carline in resisting the stresses to which it will be submitted under service conditions, a longitudinal hollow rib 8 is pressed up in each corner portion. Each of these corner ribs extends from the end of the carline at least one-fourth of the way to the ridge and thence preferably in a gradual curve to the edge of the carline. The ends of the carline are provided with bol"holes spaced widely apart in position for use in securing the carline to the side plates of the car.

The carline above described has numerous advantages. In the first place, it is not only made of a single sheet of metal but is Well adapted to be pressed in a single operation and withor: injury to the metal. In the next place, it is designed not only so that a light weight of metal will carry a considerable portion or the vertical load or" the roof, but it is especially well adapted to ofier resistance to the torsional stresses that tend to rack and weave the car body and to the horizontal stresses that tend to throw the car body out of square. At the same time, the wide spread of the holes for the rivets 4 by which it is secured to the side plates of the car cooperates in accomplishing said functions, especially in accomplishing the function of a brace or gusset in stiffening the roof frame against horizontal forces tending to distort said frame. It may be noted that, in case the stresses become so excessive as to overcome the resistance of the carline, the carline isladapted to yield thereto by bending to a limited extent without fracturing and with full capacity for restorlng itself .to its original condition Without permanent injury.

l/Vhat .I claim 1s:

1. .A sheet metal ca'rline whose middle :portionis made in the form of a hollow rib that tapers in width and in depth from irldge to ends and whose lateral base portions widen ifrom ridge to ends, each latthe bottom that extends inwardly from the end thereof at least one-fourth of the distance to the ridge.

3. A pressed metal carline whose longi- 'tudinalimiddle portion is made in the form of a hollow rib and Whose lateral portions are widera't the ends than at the ridge, said iasesis portions are wider at the ends than at the ridge, each littfil'tliPOLtiOll comprising a 1101- low rib that extends inwardly from the end thereof.

e '6. A single piece metal carline pressed from .a rectangular sheet comprising a hollow rib open :at the bottom and having lateral base flanges throughout the length of the carline, said base flanges having 1101- low ribs opentat the bottom extending from the ends thereof at least one-fourth of the distanceto the ridge and thence to the outer edges of the irespective flanges 7. A single piece sheet metal carline comprising a hollow rib open at the bottomand extending the whole length thereof without any interruptions of the continuity of its surfaces and having laterally extended flanges at the bottom thereof throughout its length, :and longitudinally extending corrugations in the corner portions of said flanges :extendinginwardly from the ends of said flan es and to enin down-wardl Signed at Parnassus, JPa., this 17th day of February, 1922.

CHARLES :D-AVID BONSALL. 

